A screen panel for mining and quarrying industries adapted to be mounted on a screen deck, including a screening surface made up of materials such as herein described formed on a reinforcing frame, said screening surface having suitably designed apertures of desired shape for allowing materials of desired size to pass through, said apertures having walls (2) made of abrasion resistant material such as herein described, whereby retention of said desired shape of said apertures is ensured for a substantially long period of time.